Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Influence of External Air Velocity for Tribological Characteristics between Sintered Friction Material and Disk

외부 공기속도 변화에 따른 소결마찰재와 디스크간 마찰특성

  • Lee, Jong Seong (Department of R/S System Engineering, Graduate School of Railroad, Seoul National University of Science and Technology) ;
  • Lee, Hi Sung (Department of R/S System Engineering, Graduate School of Railroad, Seoul National University of Science and Technology)
  • 이종성 (서울과학기술대학교 철도전문대학원 철도차량시스템공학과) ;
  • 이희성 (서울과학기술대학교 철도전문대학원 철도차량시스템공학과)
  • Received : 2012.02.12
  • Accepted : 2012.08.19
  • Published : 2013.02.28
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Abstract

Cu-matrix sintered brake pads and low-alloy heat-resistant steel are commonly applied to basic brake systems in high-energy moving machines. In this research, we analyzed the tribological characteristics to determine the influence of the air velocity between the disk and pad. At a low brake pressure with airflow, the friction stability was decreased as a result of the lack of tribofilm formation at the disk surface. However, there were no significant changes in the friction coefficient under any of the test conditions. The wear rates of the friction materials were decreased with an increase in the airflow velocity. As a result, the airflow velocity influenced the friction stability, as well as the wear rate of the friction materials and disk, but not the friction coefficient.

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References

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